Important Information about Configuring Cisco Unified IP Phone Support

·When configuring the load command:

-In Cisco Unified CME 7.0 and earlier versions, do not include the .sbin or .loads file suffix except for the Cisco ATA and Cisco Unified IP Phone 7905 and 7912.

-In Cisco Unified CME 7.0(1) and later versions, use the complete filename, including the file suffix, when you configure the load command for phone firmware versions later than version 8-2-2 for all phone types.

·When configuring the load command for IP phones such as the Cisco Unified IP Phone 7906G, 7911G, 7941G, 7941GE, 7961G, 7961GE, 7970G, and 7971G, configure only the filenames that are marked with an asterisk (*) in the table below.

·Only SCCP phones can be configured as agent phones for Unified CCX 5.0 in Cisco Unified CME 4.2 and later versions. The Cisco VG224 Analog Phone Gateway and analog and SIP phones are supported as usual in Cisco Unified CME, however, not as Unified CCX agent phones.

·When upgrading phone load version, first upgrade phone load 8.0.4 to 8.0.5 followed by phone load 8.0.5 to 8.1.1. Once your phone load version is upgraded to 8.1.1 you should upgrade it to version 8.1.2.

* These memory recommendations and maximum numbers of IP phones are for common Cisco Unified CME configurations only. Systems with large numbers of phones and complex configurations may not work on all platforms and can require additional memory or a higher performance platform.

1.Total number of connected IP phones cannot exceed Maximum Total listed includingSCCP and SIP phones on the same router.

Supported Platforms and Memory Specifications: SIP IP Phones*

Cisco Platform

Maximum Total1 IP Phones

Maximum SIP IP Phones

Maximum Total Virtual Ports

Recommended DRAM

Recommended Flash Memory

Cisco IAD 2430

25

NA

NA

256

128

Cisco 1861

15

15

48

256

128

Cisco 2801

25

25

120

256

128

Cisco 2811

35

25

144

256

128

Cisco 2821

50

50

192

256

128

Cisco 2851

100

100

288

384

128

Cisco 2901

35

35

200

512

256

Cisco 2911

50

50

300

512

256

Cisco 2921

100

100

400

512

256

Cisco 2951

150

150

500

512

256

Cisco 3825

175

175

500

384

128

Cisco 3845

250

250

720

384

128

Cisco 3925

250

250

600

1GB

256

Cisco 3925E

400

400

1100

1GB

256

Cisco 3945

350

350

900

1GB

256

Cisco 3945E

450

450

1200

1GB

256

* These memory recommendations and maximum numbers of IP phones are for common Cisco Unified CME configurations only. Systems with large numbers of phones and complex configurations may not work on all platforms and can require additional memory or a higher performance platform. 1.Total number of connected IP phones cannot exceed Maximum Total listed including SCCP and SIP phones on the same router.